Canon Rebel T3i Zoom Telephoto lenses that have Sigma OS image stabilization

"Consistent output, fast/accurate auto-focus, nice bokeh, strong construction."

Fixed aperture The same aperture at all focal lengths

Wide aperture f/2.8

	Image stabilization	Sigma OS			Zoom range	2.9x
	Fixed aperture	Yes			Length	n/a
	Max focal length	200 mm			Focus motor	Sigma HSM
	Aperture	f/2.8			Weight	1.4 kg

"Love the wide range of focal length from 50 to 500mm. I find the quality of the photos at all focal lengths to be very crisp and in focus."

Great telephoto lens 500 mm

Great zoom range 10x

	Image stabilization	Sigma OS			Zoom range	10x
	Fixed aperture	No			Length	219 mm
	Max focal length	500 mm			Focus motor	Sigma HSM
	Aperture	f/4.5			Weight	2 kg

"Very good picture quality (especially at f/8 and smaller) and optical stabilization. "

Great telephoto lens 400 mm

	Image stabilization	Sigma OS			Zoom range	3.3x
	Fixed aperture	No			Length	204 mm
	Max focal length	400 mm			Focus motor	Sigma HSM
	Aperture	f/4.5			Weight	1.7 kg

"Great for close ups of action (sports), wildlife and portraits."

	Image stabilization	Sigma OS			Zoom range	4x
	Fixed aperture	No			Length	102 mm
	Max focal length	200 mm			Focus motor	Sigma HSM
	Aperture	f/4			Weight	n/a

"I got this lens about a month and a half ago and I have been pleased with it so far. It is my second walk-around lens for my Canon XTi."

	Image stabilization	Sigma OS			Zoom range	6.9x
	Fixed aperture	No			Length	89 mm
	Max focal length	125 mm			Focus motor	Sigma HSM
	Aperture	f/3.8			Weight	0.5 kg

"It takes clear images at low shutter speeds thanks to it's image stabilization. It feels solid and is not very heavy."

	Image stabilization	Sigma OS			Zoom range	4.3x
	Fixed aperture	No			Length	127 mm
	Max focal length	300 mm			Focus motor	None
	Aperture	f/4			Weight	0.6 kg

"A GREAT PIECE OF EQUIPMENT AT A FAIR PRICE.A LITTLE HEAVY. GOOD QUALITY PICTURES IN GOOD SUNLIGHT."

Great telephoto lens 500 mm

	Image stabilization	Sigma OS			Zoom range	3.3x
	Fixed aperture	No			Length	252 mm
	Max focal length	500 mm			Focus motor	Sigma HSM
	Aperture	f/5			Weight	1.9 kg